Year	kt
1960	0
1961	0
1962	0
1963	0
1964	0
1965	0
1966	0
1967	0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	216.353
1983	157.681
1984	172.349
1985	165.015
1986	205.352
1987	234.688
1988	264.024
1989	308.028
1990	315.362
1991	311.695
1992	289.693
1993	212.686
1994	110.01
1995	99.009
1996	113.677
1997	392.369
1998	1661.151
1999	2790.587
2000	3905.355
2001	3854.017
2002	4125.375
2003	4642.422
2004	5104.464
2005	5390.49
2006	6292.572
2007	7704.367
2008	8030.73
2009	6805.952
2010	7407.34
2011	9097.827
2012	8386.429
2013	7411.007
2014	5691.184
2015	6131.224
2016	7994.06